Home / 18,738.40-25,861.56-10,780.44

Finding the Fourth Proportional to 18,738.40, 25,861.56 and 10,780.44

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Solution

The fourth proportional to 18,738.40, 25,861.56 and 10,780.44 is: 14,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.40 : 25,861.56 = 10,780.44 : x
  2. Step 2: Convert to fraction form
    18,738.40/25,861.56 = 10,780.44/x
  3. Step 3: Cross multiply
    18,738.40x = 25,861.56 × 10,780.44
  4. Step 4: Simplify right side
    18,738.40x = 278,798,995.89
  5. Step 5: Solve for x
    x = 278,798,995.89/18,738.40
  6. Step 6: Final answer
    x = 14,878.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.